Rear shock absorber for motor vehicles



Feb. 7, 1928.

C. SCHAEFFER REAR SHOCK ABSORBER FOR MOTOR VEHICLES Filed April 27, 1927 3 Sheets-Sheet l INVENTOR (mare/.55 Sc-HAEFFEQ. BY 11 fi ATTORNEY Feb. 7, 1928. 1,658,657

c. SCHAEFFER REAR SHOCK ABSORBER FOR MOTOR VEHICLES Filed April 21', 1927 s Sheets-Sheet 2 INVENTOR (HA/245s ScHAEFFER.

ATTORNEY Feb. 7, 1928. 1,658,657

C.SCHAEFFER 7 REAR SHOCK ABSORBER FOR MOTOR VEHICLES Filed April 27, 1927 3 Sheets-Sheet 5 ATTCRN EY Patented Feb. 7, 1928.

UNITED STATES PATENT OFFICE.

CHARLES SCHAEFFEB, F PARIS, FRANCE, ASSIGINOR TO SOCIETE ANONY ME DES ANCIENS ETABLISSEMEN TS PANI-IARD & LEVASSOR, 0F PARIS, FRANCE.

REAR SHOCK ABSORBER FOR MOTOR VEHICLES.

Application filed April 27, 1927, Serial No. 187,063, and in- France May 8, 1926.

The present invention relates to a rear shock absorber for motor vehicles which serves to limit the relative oscillations of the vehicle frame and the rear axle in the vertical and also in the transverse direction.

The said shocl; absorber is mountedon the vehicle frame and comprises two vertical discs which are applied in an elastic manner to the respective sides of a vertical plate 0 which is secured to the rear axle, said discs being mounted in a frame which is rotatable on a vertical support which secured to the vehicle frame and against which the said a rotatable frame is applied in an elastic manner.

The friction between the said vertical plate and the said discs will absorb the vertical displacements, and the friction between the rotatable frame and the support will absorb the oscillations of said rbtatable frame about the axis of rotation, which axis is parallel with the longitudinal axis of the vehicle.

The appended drawings show by wayof example an embodiment of the invention.

Fig. 1 is a side view of the apparatus,

Fig. 2 an end view, and,

Fig. 3 a plan view.

Figs. 4 and 5 are respectively an elevational and a plan view of the apparatus according to the invention, in combination.

with a rear suspension comprising springs which are disposed in the interior of the vehicle frame.

In Figs. 1 to 3, the rear axle 1 is provided with an extension piece 2 which has the form of a vertical plate and is vertically slidable between the two discs 3 which are guided in a case or frame 4; the springs 5 apply the discs 3 against the plate 2 in an elastic manner.

The case 4 comprises a circular portion 6 by which it makes contact with a support 7 which ismounted on the rear cross-piece 8 of the vehicle frame. At the centre of the circular part 6 is disposed a rod 9 which traverses the support 7 and upon which is mounted a plate 10 which is subjected to the action of a spring 11.

The vertical or transverse oscillations of sists of springs which are placed in the interior of the vehicle frame and are mounted on a support which is rotatable on the thrust tube of the rear axle.

This case shown in 4 and 5.

The springs 12 are mounted in the two cross-pieces of the vehicle frame and are secured at one end to a support 15 which is rotatable on the thrust tube 16 of the rear axle.

p It is obvious that additional elastic connections may be provided between the rear axle and the vehicle frame whereby these parts will be constantly brought into their normal position of equilibrium.

Having thus described my apparatus, what claim as new therein, and my own invention, is

In a rear shock absorber for motor vehicles, which is adapted to limit the relative oscillations ofthe vehicle frame and of the rear axle in the vertical and the transverse directions, the combination of two vertical discs, a vertical plate which is secured to the rear axle of said vehicle and upon whose respective opposite faces the said discs are applied in an elastic manner, a frame upon which the said discs are mounted, a vertical support upon which the said frame is rotatable and which is secured to the vehicle frame,'said rotatable frame being applied in an elastic manner against the said support, the vertical displacements being damped by the friction produced between said plate and said discs, whilst the oscillations about the axis of rotation of said rotatable frame are damped by the friction produced between the said rotatable frame and the said support.

In testimony whereof I have hereunto aflixed my signature.

CHARLES SCHAEFFER. 

